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Heavy-duty vehicle hybrid control system and control method

A hybrid and heavy-duty vehicle technology, applied in the field of hybrid vehicle control systems, can solve problems such as braking energy recovery and reuse, and achieve the effect of improving fuel economy and avoiding energy waste

Pending Publication Date: 2019-04-02
XUCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this stage, the parallel hydraulic energy regeneration system generally only uses the hydraulic system, and does not have the function of recovering and reusing the braking energy when driving downhill.

Method used

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  • Heavy-duty vehicle hybrid control system and control method

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Embodiment Construction

[0031] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "serial", "access", and similar expressions u...

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Abstract

The invention discloses a heavy-duty vehicle hybrid control system and control method. The heavy-duty vehicle hybrid control system comprises a wheel driving sub system, a hydraulic sub system and a pressure sub system. The heavy-duty vehicle hybrid control method comprises the steps of a parking brake energy recovery control mode, a vehicle downhill running process energy recovery control mode, avehicle downhill control strategy and a starting control mode. According to the heavy-duty vehicle hybrid control system and control method, brake energy can be mainly recovered by using characteristics of high power density and rapid response of the hydraulic sub system; by using characteristics of high energy density and slow dynamics of the pressure sub system, the vehicle downhill motion energy is mainly recovered, and compressed air generated by using the pressure sub system to recover the energy is used for being injected into an engine or used for auxiliary functions such as braking, and therefore, the fuel economy of the engine is enhanced, and vehicle energy waste is effectively avoided.

Description

technical field [0001] The invention relates to the field of a hybrid vehicle control system, in particular to a heavy-duty vehicle hybrid control system and a control method. Background technique [0002] Heavy-duty vehicles, when driving on urban roads, will frequently start, brake and other working conditions. During the starting process, the output power of the engine is very high; during the braking process, its braking energy is generally converted into the brake The heat on the board is dissipated in the form of thermal energy, which not only wastes energy, but also causes system heating and component loss. [0003] When driving on a downhill road, it is generally required to run smoothly and at a constant speed, which also requires the driver to brake continuously, so that braking energy will also be generated. Similarly, this braking energy is also converted into heat and dissipated in the form of heat energy. [0004] At present, the energy storage components for ...

Claims

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Application Information

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IPC IPC(8): B60L7/10
CPCB60L7/10Y02T10/62
Inventor 胡万强
Owner XUCHANG UNIV
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